CVE-2011-4838

Description

JRuby before 1.6.5.1 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 7.27% Top 10%
Vendor Advisory redhat.com Vendor Advisory gentoo.org Vendor Advisory jruby.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.nruns.com/_downloads/advisory28122011.pdf third party advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/72019 vdb entry third party advisory
http://jruby.org/2011/12/27/jruby-1-6-5-1.html vendor advisory
http://secunia.com/advisories/50084 third party advisory
http://secunia.com/advisories/47407 third party advisory
http://www.kb.cert.org/vuls/id/903934 third party advisory us government resource
http://rhn.redhat.com/errata/RHSA-2012-1232.html vendor advisory broken link
http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html mailing list broken link
http://security.gentoo.org/glsa/glsa-201207-06.xml third party advisory vendor advisory
http://www.ocert.org/advisories/ocert-2011-003.html third party advisory

Frequently Asked Questions

What is the severity of CVE-2011-4838?
CVE-2011-4838 has been scored as a medium severity vulnerability.
How to fix CVE-2011-4838?
To fix CVE-2011-4838, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-4838 being actively exploited in the wild?
It is possible that CVE-2011-4838 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~7% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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